Dental appliance



FIG. 1 is a front view of a dental appliance showing my new design;

FIG. 2 is a rear view of the dental appliance;

FIG. 3 is a left side view of the dental appliance, a right side view being a mirror image thereof;

FIG. 4 is a top view of the dental appliance;

FIG. 5 is a bottom view of the dental appliance; and,

FIG. 6 is a top front side perspective view of the dental appliance. 

CLAIM The ornamental design for a dental appliance, as shown and described. 